2007 PORSCHE CAYMAN engine

EmissionControlSystem
Intheinterestofcleanair
Pollutionofourenvironmenthasbecomeaproblemthatisofincreasingconcerntoallofus.Weurgeyoutojoinusinoureffortsforcleanerairincontrollingthepollutantsemittedfromtheautomobile.
Porschehasdevelopedanemissioncontrolsystemthatcontrolsorreducesthosepartsoftheemissionthatcanbeharmfultoourenvironment.YourPorscheisequippedwithsuchasystem.
PorschewarrantstheEmissionControlSysteminyournewcarunderthetermsandconditionssetforthintheWarrantyBooklet.
You,astheownerofthevehicle,havetherespon-sibilitytoprovideregularmaintenanceserviceforthevehicleandtokeeparecordofallmaintenanceworkperformed.Tofacilitaterecordkeeping,havetheserviceperformedbyauthorizedPorschedeal-ers.TheyhavePorschetrainedtechniciansandspecialtoolstoprovidefastandefficientservice.
Toassureefcientoperationofthe
EmissionControlSystem
HaveyourvehiclemaintainedproperlyandinaccordancewiththerecommendationsdescribedinyourMaintenanceBooklet.Lackofpropermaintenance,aswellasimproperuseofthevehicle,willimpairthefunctionoftheemissioncontrolsystemandcouldleadtodamage.
Donotalterorremoveanycomponentoftheemissioncontrolsystem.
Donotalterorremoveanydevice,suchasheatshields,switches,ignitionwires,valves,etc.,whicharedesignedtoprotectyourvehicle’semissioncontrolsystem.Inadditiontoseriousenginedamage,thiscanresultinafireifexcessrawfuelreachestheexhaustsystem.
Donotcontinuetooperateyourvehicleifyoudetectenginemisfireorotherunusualoperatingconditions.
Parking
Warning!
Dangerofreresultinginseriouspersonalinjuryordeath.
Donotparkoroperatethevehicleinareaswherethehotexhaustsystemmaycomeincontactwithdrygrass,brush,fuelspillorotherflammablematerial.
Ifyourcarcatchesonfireforanyreason,callthefiredepartment.Donotendangeryourlifebyattemptingtoputoutthefire.
Undercoating
Danger!
Dangerofreresultinginseriouspersonalinjuryordeath.
Donotapplyadditionalundercoatingorrust-proofingonorneartheexhaustmanifold,exhaustpipes,catalyticconvertersorheatshields.Duringdrivingthesubstanceusedforundercoatingcouldoverheatandignite.
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HowEmissionControlWorks
Whenanautomobileengineisrunning,itusesenergygeneratedthroughthecombustionofamixtureofairandfuel.Dependingonwhetheracarisdrivenfastorslowlyorwhethertheengineiscoldorhot,someofthefuel(hydrocarbons)maynotbeburnedcompletely,butmaybedischargedintotheenginecrankcaseorexhaustsystem.Additionalhydrocarbonsmayentertheatmospherethroughevaporationoffuelfromthefueltank.Thesehydrocarbons(HC),whenreleasedintotheair,contributetoundesirablepollution.
Inaddition,carbonmonoxide(CO)andoxidesofnitrogen(NOx)contributetoengineemissions.They,too,areformedduringthecombustionprocessanddischargedintotheexhaustsystem.
Toreducethesepollutants,yourPorscheisequippedwithapreciselycalibratedfuelinjectionsystemtoassureafinelybalancedair/fuelmixtureunderalloperatingconditions.
Oxygensensor
Theoxygensensor,installedintheexhaustpipecontinuouslysensestheoxygencontentoftheexhaustandsignalstheinformationtoanelectroniccontrolunit.Thecontrolunitcorrectstheair/fuelratio,sotheenginealwaysreceivesanaccuratelymeteredair/fuelmixture.
Crankcaseventilation
Throughcrankcaseventilation,undesirableemissionsfromtheenginecrankcasearenotpermittedtoreachtheoutsideatmosphere.Theseemissionsarerecirculatedfromthecrankcasetotheairintakesystem.Fromheretheemissionsmixwiththeintakeairandarelaterburnedintheengine.
Catalyticconverters
Thecatalyticconvertersareefficient”clean-up“devicesbuiltintotheexhaustsystemofthevehicle.Thecatalyticconvertersburntheundesirablepollutantsintheexhaustgasbeforeitisreleasedintotheatmosphere.
Theexclusiveuseofunleadedfueliscriticallyimportantforthelifeofthecatalyticconvert-ers.Therefore,onlyunleadedfuelmustbeused.
Thecatalyticconverterswillbedamagedby:
–pushortowstartingthevehicle,
–misfiringoftheengine,
–turningofftheignitionwhilethevehicleismovingor
–drivinguntilthefueltankiscompletelyempty,
–byotherunusualoperatingconditions.
Donotcontinuetooperateyourvehicleundertheseconditions,sincerawfuelmightreachthecatalyticconverters.Thiscouldresultinoverheatingoftheconverters.Federallawprohibitsuseofleadedfuelinthiscar.
Maintenance,CarCare221

FuelEvaporationControl
Fueltankventing
Theevaporationchamberandthecarboncanisterpreventfuelfromescapingtotheatmosphereatextremehighoutsidetemperatures,whendrivingabruptlyaroundcurvesandwhenthecarisparkedataninclineorinanyothernonlevelposition.
Vaporcontrolsystemandstorage
Whenthefueltankisfilled,vaporsarecollectedintheevaporationchamberbyaventlineleadingthevaporstothecarboncanisterwheretheyarestoredaslongastheenginedoesnotrun.
Purgesystem
Whentheengineisrunning,thefuelvaporsfromthecanisterwillbemixedwithfreshairfromtheambientairofthecanister.Thismixturewillbedirectedtotheintakeairhousingbythetankventline,mixedwiththeintakeairandburnedduringnormalcombustion.
222Maintenance,CarCare

WasherFluid
Capacity
–Withoutheadlightcleaningsystem:approxi-mately2.6quarts(2.5liters).
–Withheadlightcleaningsystem:approximately6.3quarts(6liters).
Washeruid
Thereservoir,withabluescrewcap,isinthefrontluggagecompartment,totherearleft.
Cleanwaterisgenerallynotenoughtocleanthewindshieldandheadlights.Dependingontheseason,mixthewaterwiththeappropriateadditives.Followtheinstructionsforthemixtureratio.
Onlyusewindowcleanerconcentratewhichmeetsthefollowingrequirements.
–Dilutability1:100
–Phosphate-free
–Suitableforplasticheadlightlenses.
WerecommendwindowcleanerconcentratesapprovedbyPorsche.YourauthorizedPorschedealerwillbepleasedtoadviseyou.
Summerlling
Water+windowcleanerconcentrateatthemixingratioindicatedonthecontainer.
Winterlling
Water+antifreezeprotection+windowcleanerconcentrateatthemixingratioindicatedonthecontainer.
Pleasenotealltheinformationonthecontain-ersofthewindowcleanerconcentrateortheantifreezeprotection.
Addingwasheruid
1.Pleasenotealltheinformationontherefillcontainerofthecleaningagent.
2.Opencapofthewasher-fluidreservoir(arrow).
3.Addwasherfluidandclosecapproperly.
Donotuseenginecoolantanti-freezeoranyothersolutionthatcandamagethecar’spaint,inthewasherreservoir.
Warninglight
Iflessthan0.52quarts(0.5liter)remains,awarningmessageappearsontheon-boardcomputer.
Addwasherfluid.
Maintenance,CarCare223

PowerSteering
Warning!
Riskofaccidentresultinginseriouspersonalinjuryordeath.Whentheengineisstopped(e.g.whenbeingtowed)orthehydraulicsystemfails,thereisnoassistanceforsteering.Therefore,substantiallymoreforcewillhavetobeexertedinordertosteer.
Exercisegreatcarewhenbeingtowed.
HavethefaultremediedatyournearestauthorizedPorschedealer.
Note
Theflownoiseheardatfullsteeringlockissystemrelatedanddoesnotindicateadefectinthesteeringsystem.
Checkinghydraulicuid
Thereservoirisintheenginecompartment.
Regularcheckingofhydraulicfluidispartofservicing.
Pleaseobservethechapter”EXERCISEEXTREMECAUTIONWHENWORKINGONYOURVEHICLE”onpage202.
224Maintenance,CarCare

Filter
Airlter
Theairfilterisontheleft-handsideoftheenginecompartment.
Adirtyairfilternotonlyreducesengineperform-ance,butcanleadtoprematureenginewear.
Regularfilterreplacementispartoftheroutinemaintenanceservice.
Industyconditions,checkthefilterelementmorefrequentlyandreplaceifnecessary.
Combinationlter
Thefreshairpassingthroughthecombinationfilterintothepassengercompartmentisvirtuallyfreeofdust,pollen,andunpleasantodors.
Iftheoutsideairispollutedbyexhaustfumes,pressthecirculating-airbutton.
Adirtyfiltercanbethecauseofreducedairthroughput:
HavethefilterreplacedbyanauthorizedPorschedealer.
Regularfilterreplacementispartoftheroutinemaintenanceservice.
Maintenance,CarCare225

AutomaticTransmissionFluid
ThetorqueconverterandthetransmissionarelubricatedwithAutomaticTransmissionFluid(ATF).Thefinaldriverequirestransmissionoil.
Pleaseobservethechapter”CAPACITIES”onpage301.
DonottowthecarorruntheenginewithoutATFinthetransmission.Theautomatictransmissionmaybedamagedbyevenatinyspeckofdirt,onlyacleanfunnelorspoutmustbeusedwhenaddingATF.
TheATFandtransmissionoilhastobecheckedandchangedattheintervalslistedinyourMainte-nanceSchedule.
WerecommendthatyouhavetheATFandtrans-missionoilchangedatyourPorschedealer,whohastherequiredlubricantsandthenecessaryfillingequipment.
Ifyoususpectanoilleakinthetransmission,haveyourauthorizedPorschedealercheckitoutimmediately.
226Maintenance,CarCare

Paint
Neverrubadustycarwithadryclothsincedustparticlesareabrasiveandcoulddullanddamagethesurfacefinish.
Thepaintworkofyourcarisexposedtoalltypesofmechanicalandchemicalconditions,particularlyclimaticonessuchasbrightsunlight,rain,frostandsnow.Ultravioletlight,rapidchangesintemperature,rain,snow,industrialdustandchemicaldepositsconstantlyattackthepaintwhichisonlyabletowithstandsuchexposureinthelongtermifitisgivenregularcareandattention.
Donotapplysiliconepolishestothewindows.
Donottreatmatt-paintedcomponentswithpreservativesorpolishesasthiswillspoilthematteeffect.
Preservation
Thepaintsurfacebecomesdullovertimeduetoweathering.Itisthereforenecessarytopreservethepaintregularly.
Thiskeepsthepaintshinyandelastic.Dirtispreventedfromadheringtothepaintsurfaceandindustrialdustispreventedfrompenetratingthepaint.
Provideditiswashedandtreatedwithpreservativeregularly,thebrandnewfinishofyourvehiclewillberetainedforyearstocome.
Simplyapplypaintpreservativeafterwashingthevehicleandpolishitsmooth.
Polishing
DonotresorttousingPorschepolishuntilitbecomesevidentthatthenormalpreservativesnolongerproducethedesiredfinish.
Spotsandstains
Removetarstains,grease,oilspotsanddeadinsectsassoonaspossiblewithInsectRemover.Theycancausediscolorationifallowedtoremainonthepaintwork.
Washtheaffectedareaimmediatelyaftertreatingit.
Minorpaintdamage
Haveminorpaintdamage,suchasscratches,scoresorchipscausedbyflyingstones,repairedimmediatelybyyourauthorizedPorschedealerbeforecorrosionsetsin.
However,iftherearealreadytracesofcorrosion,theymustfirstberemovedcarefullyandthorough-ly.Coattheareawitharust-proofingprimerandfinishoffwithatopcoat.ThepaintcodeandcolornumberarefoundonthedatabankintheMainte-nancebookletandonthefillerflap.
Cleaningandpreservingengine
compartment
Theenginecompartmentandthesurfaceoftheenginearetreatedwithacorrosion-inhibitoratthefactory.
Ifdegreasingsolventsareusedtocleantheenginecompartmentortheengineiswasheddown,theprocessalmostinvariablyremovesthecorrosion-inhibitingcoating.Itisthenabsolutelynecessarytohaveadurablepreservativeappliedtoallsurfaces,bodyseams,jointsandassembliesintheenginecompartment.Thisalsoapplieswhencorrosion-inhibitorpartsarereplaced.
Caution!
Riskofdamagetothealternator.
Donotpointthecleaningjetdirectlyatthealternator,orcoverthealternator.
Effectivecorrosion-proofingisparticularlyimpor-tantduringthecoldweatherseason.Ifyourcarisdrivenfrequentlyinareaswheresalthasbeenspreadontheroads,thewholeenginecompart-mentshouldbecleanedthoroughlyafterthewintertopreventsaltfromcausinganylastingdamage.Afullunder-bodywashshouldalsobeperformedatthesametime.
230Maintenance,CarCare